Define Hydraulic: The study of pressure in liquids.

Define Pneumatic: the study of pressure in gases.


What are 4 hydraulic devices? :
Bulldozer
Garbage compractors
Log splitters
Automobile brakes.
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what are 4 pneumatic devices?:
dentist drills
vaccumes
impact wrenches
saws.
http://ca.answers.yahoo.com/question/index?qid=20090427163235AAPIzBq

How do hydraulic systems work?:
The force applied at one point is transmitted to another point using an incompressible fluid.
http://answers.yahoo.com/question/index?qid=20070428043812AACPWaG

How do pneumatic systems work?:
any system that uses air pressure to move either a turbine or a cylinder to accomplish some work.
http://answers.yahoo.com/question/index?qid=20090221105806AAK2g78

What are the major differences between hydraulic and pneumatic systems?:
pneumatics air is compressible. In hydraulics, liquids are not.
Hydraulics have stronger pressure.
http://answers.yahoo.com/question/index?qid=20090104091141AAxeJmP


external image images?q=tbn:ANd9GcR5xKNo_MWFbVhLNJ1-oDPkxo-pj76QfBtx1G8eZvu5RT4JH3A- pneumatic tools


external image images?q=tbn:ANd9GcSuaAZ0n5LQmHV3PK-L6xNeFapDiS0JYSE2g6v5YPm4LBpkRMqD Hydraulic tools